
Raw Ore: Limonite Type Laterite Nickel Ore
Ni Grade: 1.2%
Co Grade: 0.12%
Final Product: Nickel-Cobalt Mixed Sulfide (MSP)
Product Specification: Ni≥35%, Co≥3.5%
Recovery Rate: Ni 87%, Co 90%
Capacity: 1.2 million tons per year (3,300 TPD)
Work Scope: EPC + Commissioning
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Ore preparation (screening & blending) to control feed size ≤2mm

4-stage CCD counter-current washing for pregnant leach solution (PLS) extraction

Mixed Sulphide Precipitation (MSP) using H₂S gas

Acid regeneration plant (90% H₂SO₄ recovery)

Tailings management via deep sea discharge pipeline

High-Pressure Acid Leaching (HPAL) at 250°C with sulfuric acid

PLS purification via H₂S precipitation for iron/aluminum removal

Pressure filtration and drying of MSP product

Neutralization circuit with limestone for effluent treatment
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